perf: update git config

Author: andhreljaKern

.github/workflows/pi_build.yml

@@ -78,11 +78,11 @@ jobs:
           cd ${{ github.workspace }}/submodules/parent-images
           git checkout ${{ github.event.pull_request.head.ref }}
           pip-compile requirements/${{ matrix.parent_image_type }}-requirements.in
-
-          git config --global user.email "devtools@kern.ai"
-          git config --global user.name "GitHub Actions"
           
           cd ${{ github.workspace }}
+          git config user.email "devtools@kern.ai"
+          git config user.name "GitHub Actions"
+
           git checkout -b ${{ github.event.pull_request.head.ref }}
           git add submodules
           git commit -m "${{ github.event.pull_request.title }}"